Milos Raonic from Canada in action against David Goffin from Belgium during their semifinal match at the BNP Paribas Open tennis tournament in Indian Wells, California, USA, 19 March 2016. EPA/MIKE NELSON

David Goffin from Belgium in action against Milos Raonic from Canada during their semifinal match at the BNP Paribas Open tennis tournament in Indian Wells, California, USA, 19 March 2016. EPA/MIKE NELSON

Novak Djokovic from Serbia in action against Rafael Nadal from Spain during their semifinal match at the BNP Paribas Open tennis tournament in Indian Wells, California, USA, 19 March 2016. EPA/MIKE NELSON

Rafael Nadal of Spain in action against Novak Djokovic of Serbia during their semi-final round match at the BNP Paribas Open tennis tournament in Indian Wells, California, USA, 19 March 2016. Djokovic won the match 7-6(5), 6-2. EPA/PAUL BUCK

Rafael Nadal from Spain waves to spectators as he walks off the court after being defeated by Novak Djokovic from Serbia during their semifinal match at the BNP Paribas Open tennis tournament in Indian Wells, California, USA, 19 March 2016. Djokovic won 7-6 (5), 6-2. EPA/MIKE NELSON